Volume of a Gas Pipework
- If the volume of gas in the system is 0.035m3 or less - classified as domestic
- Installation Volume (IV) = Pipework Volume (Vp) + Fittings Volume (Vf) + Meter Volume (Vm)
- Pipework Volume (Vp)
Volume of Pipework in m3 Tubing Sizes Volume of 1m Tube Steel or Stainless Steel 15mm (½") 0.00024 20mm (¾") 0.00046 25mm (1") 0.00064 32mm (1¼") 0.00110 Copper Tube 15mm 0.00014 22mm 0.00032 28mm 0.00054 35mm 0.00084 PE Pipe 20mm 0.00019 25mm 0.00033 32mm 0.00053 - Fittings Volume (Vf) = Vp ÷ 10
- Meter Volume (Vm)
Volume of Gas in Meter in m3 Meter Type m3 E6 0.0024 G4/U6 0.008 G10/U16 0.025
- Pipework Volume (Vp)
- UK Copper Board (presentation) - Domestic Gas Pipework - Pipe Sizing
| **Discharge of Gas in m3/hour | ||||||||
|---|---|---|---|---|---|---|---|---|
| Size of tube mm | *Total Length of Pipe m | |||||||
| 3 | 6 | 9 | 12 | 15 | 20 | 25 | 30 | |
| Discharge in cubic metres per hour (m3/hour) | ||||||||
| 10 | 0.86 | 0.57 | 0.50 | 0.37 | 0.30 | 0.22 | 0.18 | 0.15 |
| 12 | 1.5 | 1.0 | 0.85 | 0.82 | 0.69 | 0.52 | 0.41 | 0.34 |
| 15 | 2.9 | 1.9 | 1.5 | 1.3 | 1.1 | 0.95 | 0.92 | 0.88 |
| 22 | 8.7 | 5.8 | 4.6 | 3.9 | 3.4 | 2.9 | 2.5 | 2.3 |
| 28 | 18.0 | 12.0 | 9.4 | 8.0 | 7.0 | 5.9 | 5.2 | 4.7 |
| *Add 0.5m for each elbow *Add 0.3m for each bend **only a 1.0 mbar drop between the ends is allowed |
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| < Go Back | 2013-03-16 |
